GB2077963B - Electronic timepiece - Google Patents

Electronic timepiece

Info

Publication number
GB2077963B
GB2077963B GB8113235A GB8113235A GB2077963B GB 2077963 B GB2077963 B GB 2077963B GB 8113235 A GB8113235 A GB 8113235A GB 8113235 A GB8113235 A GB 8113235A GB 2077963 B GB2077963 B GB 2077963B
Authority
GB
United Kingdom
Prior art keywords
electronic timepiece
oscillator
frequency divider
circuits
piezoelectric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB8113235A
Other versions
GB2077963A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suwa Seikosha KK
Original Assignee
Suwa Seikosha KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suwa Seikosha KK filed Critical Suwa Seikosha KK
Publication of GB2077963A publication Critical patent/GB2077963A/en
Application granted granted Critical
Publication of GB2077963B publication Critical patent/GB2077963B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G3/00—Producing timing pulses
    • G04G3/02—Circuits for deriving low frequency timing pulses from pulses of higher frequency
    • G04G3/027—Circuits for deriving low frequency timing pulses from pulses of higher frequency by combining pulse-trains of different frequencies, e.g. obtained from two independent oscillators or from a common oscillator by means of different frequency dividing ratios

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

An electronic timepiece includes two oscillator circuits (a,b) each of which has a piezoelectric oscillator (1, 2), the piezoelectric oscillators having materially different oscillation frequencies. Each oscillator circuit is connected to a respective frequency divider circuit (18, 19). The frequency divider circuits have different division ratios so that the output signals thereof have substantially the same frequency. <IMAGE>
GB8113235A 1980-06-03 1981-04-29 Electronic timepiece Expired GB2077963B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7446480A JPS57578A (en) 1980-06-03 1980-06-03 Electronic timepiece

Publications (2)

Publication Number Publication Date
GB2077963A GB2077963A (en) 1981-12-23
GB2077963B true GB2077963B (en) 1983-11-16

Family

ID=13547996

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8113235A Expired GB2077963B (en) 1980-06-03 1981-04-29 Electronic timepiece

Country Status (3)

Country Link
JP (1) JPS57578A (en)
CH (1) CH647124GA3 (en)
GB (1) GB2077963B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58159653U (en) * 1982-04-15 1983-10-24 尾畑　武志 Automatic playback of video cassette recorder
JPS58159651U (en) * 1982-04-16 1983-10-24 尾畑　武志 Automatic power on/off of video cassette recorder
US6026991A (en) * 1998-10-28 2000-02-22 The Lubrizol Corporation Apparatus, system, and method for additizing a liquid product

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3826931A (en) * 1967-10-26 1974-07-30 Hewlett Packard Co Dual crystal resonator apparatus
JPS5071362A (en) * 1973-10-24 1975-06-13
JPS5441773A (en) * 1977-09-09 1979-04-03 Seiko Instr & Electronics Ltd Electronic watch

Also Published As

Publication number Publication date
GB2077963A (en) 1981-12-23
CH647124GA3 (en) 1985-01-15
JPS57578A (en) 1982-01-05

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20010428